ASTM E 1364 : 1995 : R2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Measuring Road Roughness by Static Level Method
Hardcopy , PDF
12-19-2023
English
06-08-2017
CONTAINED IN VOL. 04.03, 2017 Describes the measurement of a longitudinal profile of a traveled surface using a static level for the purpose of obtaining a road roughness index.
Committee |
E 17
|
DocumentType |
Test Method
|
Pages |
6
|
ProductNote |
Reconfirmed 2017
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1This test method covers the measurement of a longitudinal profile of a travelled surface using a static level for the purpose of obtaining a road roughness index. This test method is suitable for all surface types that are travelled by conventional ground vehicles, including paved and unpaved roads.
1.2This test method is labor intensive with respect to other means for measuring longitudinal profile, and is used mainly for (1) validating other profile-measuring methods and (2) calibrating response-type roughness-measuring systems.
Note 1:When measuring road roughness with a static level for the purposes of validating other profile-measuring methods or calibrating response-type roughness-measuring systems, the static level measurement process should be evaluated to ensure the measurements are within the resolution required in Table 1. It is recommended that several locations be marked at various distances from the level and these locations be measured in sequence several times to establish if the readings stay within the resolution required. Wind, distance between the rod and the level, surface texture, and positioning of the rod all have significant impact on the repeatability of the elevation measurements. Any variation from the true elevations will primarily affect the bias as explained in 10.2. To determine the effect of random variations, random variations can be added to an existing profile and the IRI recalculated to determine the impact of the variations.
TABLE 1 Resolution Requirements
IRI Roughness Range, | Required Resolution, in. (mm) | |
Class 1 | Class 2 | |
0 (0) ≤ IRI < 30 (.5) | 0.005 (0.125) | 0.01 (0.25) |
30 (.5) ≤ IRI < 63 (1) | 0.01 (0.25) | 0.02 (0.5) |
63 (1) ≤ IRI < 190 (3) | 0.02 (0.5) | 0.04 (1.0) |
190 (3)≤ IRI < 317 (5) | 0.04 (1.0) | 0.08 (2.0) |
317 (5) ≤ IRI < 444 (7) | 0.06 (1.5) | 0.12 (3.0) |
444 (7) ≤ IRI | 0.08 (2.0) | 0.16 (4.0) |
1.3This test method describes the computation required for one particular type of roughness index, the vehicle simulation used in the International Roughness Index (IRI). Additionally, the profile obtained with this test method can be processed to obtain other roughness measures.
1.4This test method includes two levels of accuracy that can be chosen according to need. The more accurate, designated as Class 1, reduces the measurement error of the roughness index to less than 2 % of the true value of the index. The second, designated as Class 2, involves errors less than 5 %.
1.5The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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